Darth Maul has been made into a lot of different toys, but never have I seen him in a 9 foot tall inflatable Halloween decoration. He's priced at $109.00 and the regular price is $139.99.
There are some other inflatables on sale, you can get the 4 foot tall R2D2 for $64.99.
Hmmm, I did a little bit of poking around and see that they also offer a 6 foot Darth Maul Christmas inflatable, for $74.99.
Shipping is free on orders over $49, or you can also try for the free in-store pickup in one hour option if available.